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Transportation & Automotive
Class Information
Number:
246/265
Name:
Railway switches and signals
>
Point throwers
> Magnetic
Description:
Subject matter having a permanent or an electromagnet, which moves the point by magnetic attraction.
Patents under this class:
Patent Number
Title Of Patent
Date Issued
5806810
Spring rail frog having switchable magnet for holding wing rail open
Sep. 15, 1998
4924776
Switch for a floor transportation system
May. 15, 1990
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